Transfer mechanism for calculating-machines.



G.JQBARRETT.

TRANSFER MECHANISM POR'OALOULATING MACHINES.

APPLICATION FILED MAY 29. 1911.

1,017,843. v Patented Feb. 20, 1912,

4 SHEETS-SHEETJ.

' anuentov G. J. BARRETT. TRANSFER MECHANISM FOR CALCULATING MAGHINES.

APPLIGA'IION FILED MAY 29. 1911.

Patented Feb. 20, 1912.

4 SHEETS SHEBT 2 sh wentoz Wituum G.J.BARRETT. TRANSFER MECHANISM FORCALCULATING MACHINES.

Patefited Feb. 20,1912;

* .4 SHEETS-SHEET 3.

APPLIUA'TION FILED mama. 19'11.

G. J. BARRETT. TRANSFER MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED MAY 29, 1911. 1,017,843.

4 SHEETS-SHEET 4.

@lvwantoz Whine/sou Patented Feb. 20; 1912.

GLENN J. BARRETT, OF GRAND RAPIDS. MACHINE COMPANY, OF GRAND ICHIGAN,ASSIG-NOR TO BARRETT ADDING RAPIDS, MICHIGAN.

TRANSFER MECHANISM FOR GALCULATING-MACHINES To all whom it may concern.

Be it known that I, GLENN J. BARRETT, a citizen of the United States,residing at Grand Rapids, Michigan, have invented certain new and usefulImprovements in Transfer Mechanism for Calculatingfila U. S. Patent No.v976,336, issued November 22nd, 1910, although the improvements are alsoadapted to other designs. The objects of my invention are, first, toprovide such a transfer device with coacting parts which interlock andcoact to eliminate the possibility of overthrow orcarrying, prematurely.Second, to provide in such a transfer mechanism an adjustment means forthe utilization of the transfer movement of any dial section, for thefurther purpose of counting the items.

Further objects .-relating to details and I operation Will hereinafterappear.

I acomplish the objects of my invention by the devices and meansdescribed in the following specification.

Iv The invention is clearly defined and pointed out in the claims.

A structure which is sufliciently illustrative of the preferredembodiment of my invention is shown in the accompanying drawing, forminga partof this invention in which:

Figure I is a detail longitudinal sectional view through an addingmachine embodying the features of my invention. Fig. II is a detail sideelevation view of the dial :and' transfer mechanismftaken from the righton a line corresponding to line 11 of Figs. III and VI. Fig. III is adetail front view of two dial sections, the carrying and other partsbeing broken away. Fig. IV is a view similar to Fig. II except that it.is

taken from the left-hand instead of from the right-hand side, on a linecorresponding to line 1-1 of Fig. III. Fig. V, is a partial detailsectional View looking in the direc- "tion of the little arrows, takenon a line Specification of Letters Patent. Application filed May 29,1911.

transfer mechanisms for adding devices,

am that appearing in 976,336, of November 22, 1910, and is controlled bya spring 21.

Patented Feb. 20, 1912. .Serial No. 630,111.

corresponding to line 55 of Figs. II and IV. Fig. VI is a detail planview of a fragment of the key hoard showing my counting switch means,the switch lever and adjacent parts. Fig. VII is a rear view of thepivoted transfer or carrying stop l. Fig. VIII is a partial detailenlarged view of the transfer and carryingstop mechanisms showing therelation of the parts. Fig. IX is an enlarged detail sectional view,taken on aline corresponding to line 8-8 of Fig. VIII, of the camgrooved end of the transfer trip, showing the pin 43 on the swingingtrans fer stop at.

In the drawings, similar numerals of reference refer to similar severalviews and the sectional views are taken looking in the direction of thelittle arrows at the ends of the section lines.

Referring tothe numbered parts of the drawing, the casing l of the sameform my former Patent No.

. P vided-with a set of keys 2 suitably disposed within the casing, withprojectingbuttons, and provided with stop means 3 on their lower ends toengage and control the digit slides 4 by engaging the stops 5 thereon.

/ the same being connected by suitable ex A compensating spring 8 isprovided, and

a slide 9 having power for effecting posed to cooperate with a spring 10for storing of the transfer is also dissaid slide.

mechanism. Push bars 11 are associated with the slide 9 and spring 10,asin my former patent. A dial gear 13 is provided and associated with asector. 14 with which the rack' 7 meshes, the same being supported on asuitable cross .rod 15. The dial gear 13 meshes with the pinion 16,disposed and connected tothe side of the dial wheel 17. the pinion 16and dials 17 being carried on the rod or shaft 18. A look 19 is providedfor these parts, and an engaging pawl 90 is carried by the sector forcoupling the sameto thejdial gear 13. This pawl :20 is An actuatintransfervcam 22 consisting of three radian A pick-up bail 12 is alsoincorporated in the.

parts throughout i the 4 s2, and I also on the arm 25, by connecting tothe therefore, that when transfer stop 25 parts being supported on theshaft 'or rod swinging arms, supported on the shaft 15, is provided witha cam groove 23, forming an inclosed cam for controlling the transferparts. A digit stop 24 normally abuts the swinging at 30 on the arm 29,these 26. A downwardly-depending finger 27 projects from transfer stop25, and has alaterally-extending pin 28 which cooperates in the cam slotor. groove 23, and. is actuated thereby. A catch 31 is pivoted on therod a spring 33 puts tension thereon and upwardly-projecting portion 25then of. This completes the enumeration of the parts of the transfermechanism, and it is believed that the parts to which my improvementsrelate are adequately described. A complete understanding of the entiremachine can be readily had by a review of my said former patent, which,it is believed, would unnecessarily burden the present description,

The switch mechanism for disengaging the transfer means at. a givenpoint and making use of the same as a counter will now be pointed out.

A switch lever 35 ispivoted at 36, and an arm 37 is disposed underneaththe same and coupled to the arm 35 by the upwardly-extending lug 38extending through a slot in the top of the case. The arm 39 extendsdownwardly and forwardly, and is formed into a cam 40 having adepression 41 for engaging and acting'upon the upper end 25 of theswinging stop 25, as clearly appears in Figs. I, II and VII. It willbeseen, the, switch is turned to one side or the other, owing to thefact that the cam is a double cam, it will act upon this transfer stop 525 and permit this operationof the transfer mechanism at this pointwhenever an item is put into the machine. Therefore, the dial space tothe left of the particular switch will become a coun-' 'ter for theoperations or items which are put into the right-hand portion of themachine.

. ers,

A pawl 42 is pivoted on the rod 26and copin 43 on each dial, inconjunction with the reset mechanism. I deem it unnecessary to describethese parts further, as my invention has nothing to do with thesedetails.

That the advantages of my invention may I desire to remark that in anadding pp l, machine such. as is covered in my Patent 976,336, it isquite essential that the transfer parts, especially the dial gears anddrivshall fit perfectly otherwise, in rapid work, the cam. member willswing a little farther than it should by reason of the lost motion, andthe actuating part thereof will strike the swinging transfer stop ahammer blow with suflicient forceto drive it back independently of themovement of the cam,

far enough to allow the digit stop an unnecessary additional movement,which will be imparted to the dial of thenext higher denomination. Acommon expedient to overcome this difficulty is the use of a speed governing means to regulate and retard the speed of a dial part. This isobjectionable, as it means a slower machine and one requiring anextraordinary amount ofpower to operate. My invention overcomes thisdifficulty by the use of the grooved cam en gaging a pin, which preventsthe overthrow in the manner gle cam might-be supported on the transfermechanism, but I prefer to divide the'dial into three parts, and inplace of numbering that I have indicated. A sin-- 1 'to 10 to completethe circumference, have three number groups of 1 to 10, or thirtynumerals in all on my dial.

This particular construction of transfer. mechanism lends itselfespecially well to the dividing of the machine when utilizing a portionat the left-hand side as a counter for the items. parts,- by theirstructure, accomplish the quite. difierent objects of my invention,viz., the effective. avoidance of overthrow and a counter means for theitems introduced.

--With regard to the cam structure ofthe transfer mechanism, I desire tostate that thesame might be reversed and a pin be put upon the cam armand the groove at a suitable angle be formed in the swinging transferstop. As long as the parts are coupled together bycam or grooved action,

It is thus seen how the same that is all that is required with the camclosed,-so that lost motion cannot occur from the blow.

Having thus described my invention, what I claim as new and desire tosecure by Let- 'tersPatent isz i In a calculating board and accumulatingdials, a transfer mechanism for carrying over the tens from one dial toanother, comprising a reciprocating digit stop, a swinging transfer stopnormally adapted to arrest the movement of said reciprocating digitstopin one direc-.

tion, means for moving said swinging trans-. fer stop out of normalengagement with said reciprocating digit stop comprising a rotary camwith an engaging groove in the side thereof, a pin extending from saidswinging transfer stop adaptedto cooperate with said cam groove, andadjustable means for holding said swinging stop out of normal engagementwith said reciprocating dlgit stop and out oicontact with said cam,

disposed on the key board, a double cam car- 'ried by said levernormally outof engagemachine having a key comprising a cam lever havinga finger piece to move said swinging transfer stop when w 'cumulatingdials, carrying over the tens from one dlal to ansaid cam lever swingsin either direction away from normal, substantially as described and forthe purpose specified.

2. In a calculating machine having accumulating dials, a transfermechanism for carrying over the tens from one dial to another,comprising a reciprocating digit stop, a swinging transfer stop normallyadapted, to arrest the movement of said reciprocating digit stop in onedirection, means for moving said swinging transfer stop out of normalengagement with said reciprocating digit stop comprising a rotarycam, apin extending from said swinging transfer sto adapted to cooperate withsaid cam, and adjustable means for holding said swinging stop out ofnormal engagement wit-h said reciprocating digit stop and out of contactwith said cam, comprising a cam lever having a finger piece disposed onthe key board, a cam carried by said lever normally out of engagementwith said swinging stop, but adapted to move said swinging transfer stopaway from normal, substantially as .described and for the purposespecified.

3. In a calculating machine having aca transfer mechanism for other,comprising a reciprocating digit stop, a swinging transfer stop normallyadapted to arrest the movement of said reciprocating digit stop in onedirection, means formoving said swinging transfer stop out of normalengagement with said reciprocating digit stop comprising a rotary camwithan engaging groove in the side thereof, and a pin extending fromsaid swinging transfer stop adapted to cooperate with said cam groove,substantially as described and for the purpose specified.

4. In a carrying transfer mechanism for a calculating machine, thecombination of a digit stop, a movable transfer stop to nor-- mallyengage and arrest the movement of said reciprocating digit stop in onedirec-.

tion, and transfer means for moving said movable transfer stop out ofnormal engaging relation, comprisinga grooved cam, and a projection fromsaid transfer stop adapted to,co6perate with said cam groove,substantially as described.

5. In a carrying transfer mechanism for a-calculating machine, thecombination of a reciprocating digit stop, a movable transferstopnormally adapted to arrest the movement of said reciprocating digit stopin one direction, andineans for moving said movable transfer stop fromarresting relation with said reciprocating member, con'iprising a rotarymember and a projection and slot connection between said rotary memberand said movable stop, substantially as described.

(i. In a carrying transfer mechanism for digit stop, "mally arrestingsaid reciprocating digit a calculating machine, the combination of adigit stop, a movable transfer stop normally adapted to arrest themovement of said reciprocating member, a rotary member carrying a camadapted to contact, and cooperate with said movable transfer stop, andan internal cam means carried by said rotary member for preventing anyfurther movement to said movable stop beyond that imparted by a rotationof said rotary member.

7. In a'carrying transfer mechanism for a calculating machine, thecombination of a reciprocating digit stop, a movable transfer stopnormally adapted to arrest the movement of said reciprocatory member, arotary member, contact actuating connectionbetween said rotary memberand said movable stop, and an internal cam means for preventing .anyexcess movement of said movable stop beyond that imparted by saidcontact actuating connection, substantially as'describ'ed'.

8. In acarrying transfer mechanism for a calculating machine, thecombination of a reciprocatory digit stop, a movable-transfer stopnormally adapted to arrest the movement of said reciprocatory digitstop, a rotary member, contact actuating connection between said rotarymember and said mov able transfer stop, and means comprising a guidinggroove member and a guided member for preventing any excess movement ofsaid movable stop beyond that imparted by said actuating connectionbetween said rotary member and said movable transfer stop, substantiallyas described.

9. In a calculating machine, the combination of accumulating dials, areciprocating a movable transfer stop for norstop in one direction,means moving in synchrony with said dials for moving sa' movabletransfer stop from normal arresw ing position when fer point thereon,and means for holding said movable transfer stop out, of arrestingposition with reference to said reciprocating digit stop, comprising alever carrying a cam adapted to contact with said movable transfer stop,and a linger piece connection to said lever, substantially as described.

10. The combination with a carrying transfer mechanism for a calculatingmachine, having a reciprocating digit stop and a movable transfer stopfor normally arresting the movement of the same, of means for holdingsaid movable transfer stop out of cooperating relation with saidreciprocating digit stop, comprising a. lever and cam, and a fingerpiece connected to said lever, substantially as described.

11. The combination with a carrying transfer mechanism for a.calculating masaid dials pass the trans-- chine, having a reciprocatingdigit stop and my hand and seal in the presence of two a, movabletransfer sjtop for norni fally arrefstwitnesses. ing the movement 0 thesame, 0 means or holding said movable transfer stop out of GLENN E 5cooperating relation with said reciprocating Witnesses:

digit stop, substantially as described. LACY H. SERGENT,

In Witness whereof, I have hereunto set LULU B. VALENTINE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Yatehts,

' Washington, D. C.

